Oxford ; New York : Pergamon Press, 
xiii, 553 pages ; 24 cm.
Guide to official publications ; v. 1.
The first work is the 4th ed. of a work by J. B. Childs published in 1927 and 1930 under title: An account of government document bibliography in the United States and elsewhere; 3d ed., by J. B. Childs, published in 1942 under title: Government document bibliography in the United States and elsewhere.